[Interpreter] Support for operator new.

src/interpreter/bytecode-array-builder.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include <vector>
 
 #include "src/ast.h"
@@ skipping 70 matching lines @@
   // <receiver + 1 + arg_count>.
   BytecodeArrayBuilder& Call(Register callable, Register receiver,
                              size_t arg_count);
 
   // Call the runtime function with |function_id|. The first argument should be
   // in |first_arg| and all subsequent arguments should be in registers
   // <first_arg + 1> to <first_arg + 1 + arg_count>.
   BytecodeArrayBuilder& CallRuntime(Runtime::FunctionId function_id,
                                     Register first_arg, size_t arg_count);
 
-  // Operators (register == lhs, accumulator = rhs).
+  // Call the new operator. The |constructor| register is followed by
+  // |arg_count| consecutive registers containing arguments to be
+  // applied to the constructor.
+  BytecodeArrayBuilder& New(Register constructor, Register first_arg,
+                            size_t arg_count);

[rmcilroy, 2015/10/13 14:07:30]

nit - move above CallRuntime

[oth, 2015/10/14 08:40:09]

Done.

+
+  // Operators (register holds the lhs value, accumulator holds the rhs value).
   BytecodeArrayBuilder& BinaryOperation(Token::Value binop, Register reg,
                                         Strength strength);
 
   // Unary Operators.
   BytecodeArrayBuilder& LogicalNot();
   BytecodeArrayBuilder& TypeOf();
 
   // Tests.
   BytecodeArrayBuilder& CompareOperation(Token::Value op, Register reg,
                                          Strength strength);
@@ skipping 137 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TemporaryRegisterScope);
 };
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_